על ידי חני_תה* » 10 דצמבר 2007, 23:46
מאמר על טפלון שהופיע ב Consumer Report (ירחון שבודק מוצרים שונים ואינו משוחד) ביוני 2007:
Nonstick pans are OK in new tests
Researchers have long known that very high temperatures can break down the coating in nonstick pans, creating fumes that can kill pet birds and possibly causing flulike symptoms in people. Whether other emissions are a problem even at moderate temperatures has been an open question. Our tests yielded largely reassuring results.
Lab studies suggest that perfluorooctanoic acid (PFOA), used in making nonstick coating, can cause cancer and birth defects in animals, and might pose a risk in humans. PFOA stays in the body for years and in the environment indefinitely. Working with a lab that specializes in PFOA, we bought nonstick pans from seven makers and repeatedly heated and washed some pans to simulate one, three, and six months of use. We then heated new and aged pans to 400° F, a cooking temperature well below the makers? recommended maximum of 500° F, and measured PFOA in the air above the pans.
We found very little PFOA in the tested air samples. The highest level was about 100 times lower than levels that animal studies suggest are of concern for ongoing exposure to PFOA. With the aged pans, emissions were barely measurable.
CR?s take. Experts we consulted from government, industry, and environmental groups agree that the amounts of PFOA emitted by nonstick cookware probably don?t contribute much to your total PFOA exposure (the manufacture, use, and disposal of an array of products, including waterproof fabrics and electronic parts, can release PFOA into the environment). And research by the U.S. Food and Drug Administration suggests it?s very unlikely that significant amounts of PFOA migrate from pans into food. Still, it?s sensible to take a few precautions with nonstick cookware. Use ventilation when cooking, don?t put empty pans over very high heat, and toss pans that have started to flake. Flaking can cause uneven heating that might accelerate emissions.
מאמר על טפלון שהופיע ב Consumer Report (ירחון שבודק מוצרים שונים ואינו משוחד) ביוני 2007:
Nonstick pans are OK in new tests
Researchers have long known that very high temperatures can break down the coating in nonstick pans, creating fumes that can kill pet birds and possibly causing flulike symptoms in people. Whether other emissions are a problem even at moderate temperatures has been an open question. Our tests yielded largely reassuring results.
Lab studies suggest that perfluorooctanoic acid (PFOA), used in making nonstick coating, can cause cancer and birth defects in animals, and might pose a risk in humans. PFOA stays in the body for years and in the environment indefinitely. Working with a lab that specializes in PFOA, we bought nonstick pans from seven makers and repeatedly heated and washed some pans to simulate one, three, and six months of use. We then heated new and aged pans to 400° F, a cooking temperature well below the makers? recommended maximum of 500° F, and measured PFOA in the air above the pans.
We found very little PFOA in the tested air samples. The highest level was about 100 times lower than levels that animal studies suggest are of concern for ongoing exposure to PFOA. With the aged pans, emissions were barely measurable.
CR?s take. Experts we consulted from government, industry, and environmental groups agree that the amounts of PFOA emitted by nonstick cookware probably don?t contribute much to your total PFOA exposure (the manufacture, use, and disposal of an array of products, including waterproof fabrics and electronic parts, can release PFOA into the environment). And research by the U.S. Food and Drug Administration suggests it?s very unlikely that significant amounts of PFOA migrate from pans into food. Still, it?s sensible to take a few precautions with nonstick cookware. Use ventilation when cooking, don?t put empty pans over very high heat, and toss pans that have started to flake. Flaking can cause uneven heating that might accelerate emissions.